// @(#)RspecTranslator.java   9/2002
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package drcl.intserv;

/**
 * <code>RspecTranslator</code> resides in an end system (e.g., the "QoS Broker")
 * to translate the QoS requirement and the path Adspec originating from the
 * sender to the Rspec, which is then used by the resource management protocol to 
 * set up the resource along the path.
 * 
 * <p>
 * A subclass should be created for a certain rspec type.
 */
public abstract class RspecTranslator
{
	/**
	 * Given the Adspec, the method returns the "minimum" Rspec that satisfies 
	 * the specified QoS requirement.  It returns null if such an Rspec does not exist.
	 */
	public abstract SpecR translate(SpecAd adspec, QoSRequirement qos);
}
